you’d better to have more than one key tool for Mercedes key programming.

IMPORTANT: CGDI-MB is the only FBS4 key programming tool!

So, you have to use a CGDI MB esp. for FBS4 key (confirmed to read and write FBS4 keys to W205, W218,W166… without any issue) and get another auto key programmer (such as VVDI-MB TOOL and the like) for BGA keys and the other.

Note that with Xhorse VVDI MB, you should buy VVDI PROG too, because the are some eis and ecu’s that you cant do with MB Tool independently. For example some w210 eis or Sprinter 906. You should have both, VVDI MB Tool and VVDI prog. Or, if you have to buy some tool again, Simon Touch is the best, but its more expensive.

But if you have a CGDI MB, you have a chance to program a new key through OBD. All done with a tool. That’s the reason why people look for it.

YOU HAVE TO KNOW: What is the difference between FBS3 and FBS4:

Late 2015 is FBS4, Early production 2015 is still FBS3.

Not on the outer shell.. maybe the numbers under the battery cover will tell you..

You can also tell by the kind of car…

For sure FBS4… 222, 231, 205, 117, 2012 model year and up 212 and 218, 166 and 190

Note that FBS4 was added to 212 207 etc at mid 2013 (804) not in MY 2012

FBS4 can use blank keys to program to the car with Xentry and an authorized online account.. Not all online accounts have access to program keys..